How Do Barcodes Work | Earth Science
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- เผยแพร่เมื่อ 16 พ.ค. 2013
- James May explains how barcodes work, and how they avoid making mistakes.
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Anyone as stupidly fascinated as I am of how genius this is? Such simple technology yet so efficient
zec i
zec I just want to go steal and feel confident just throwing shit in my purse and not having to rip tags and cut barcodes off stuff. That's the only reason I'm watching this.
Beautiful Diamond
The alarm will still trip if the items are in ur purse unless you remove the tags and barcodes first
James May is disgustingly under rated. Entertainment characters are a large of our modern culture, if he cares to be or not - he is one. James May has been a part of many peoples lives and experiences vicariously. I hope he's humble enough at this point to recognize the fact that he has, indeed, brought joy and time spent worth while, to his viewers and fan base. I doubt he'll ever read this, but Bravo and thank you Doctor Captian slow.
P.s. I am a music man myself, having studied audio engineering/music production. I would love to see the world of music through your ears, Please try to make that happen, if at all possible. Thanks again for your work.
Eric Gordon - Long Island, NY.
2:09 why am i laughing so hard
3:37 , The Terraria Magic Mirror sound upon recall :D
I checked the comments just to see if someone noticed it lol
How could any one dislike such a video ?
I don't know why but I love this. I have watched it 3 times because it makes me happy
Approval Needed
Can't... Stop... Watching these
Agreed.Though I find some of the others interesting, I mainly see a full video whenever Mr. May is talking.
I was hoping James would see it and have the time to translate it. I am glad you enjoyed doing so, however.
Thanks, May!
This was really cool, everyday things we use without thinking explained why they work and how they do.
This is what I subscribed for. Less crap more this!!
The difference between 'their' and 'there' is important if it impacts how one understands a sentence. It doesn't take much to figure out what Dale meant from context, but in some sentences it can cause actual problems. Someone not familiar with English may also be confused by the different spellings.
I love this channel!
I was in Tescos this morning at the Self-Checkout machine thing and I thought 'Headsqueeze should do a How-Barcodes-Work video.'
Thank you Head Squeeze. :)
the outtakes of this is funy
Definately the main reason why I started watching,however the info and graphics are quite entertaining as well... ^^
I love the BAR and SPACE PICTRUES XD
I'm subbed just for James May...
Imagine having dinner with James May and Stephen Fry. You'd basically become a walking encyclopaedia.
Excellent video, I'm a printer of Pro labels and I like your exclamation of the algorithm for check digits. SF Labels
Each digit is represented by 4 bars (alternating black and white) using 7 units, so there are 3 transitions in 6 possible positions. This is the data.. That gives 20 permutations, 10 permutations for the left side, and the reverse 10 for the right side. The 4th transition is always in position 7 and confirms the end of the digit and the start of the next.
That turbo is driven by your exhaust. Its a small, rather light wheel that spins really remarkably fast, hellified rpm's thus pushing and breaking the air giving you that amazing whining noise. Think of a small scale version of when you whip your belt to your pants through the air quickly and you hear that "whoosh" sound. it's that sort of affect but smaller so it's more of a piercing noise.
No drinks on the pool table. This is the true bar code.
I translated your comment and had a lot of fun doing it!
Nice video!
very Interesting
What's the sound effect at 3:38 ? I'm sure I've heard it in a video game somewhere, Worms possibly.
One time I scanned the bar code of a Hulk comic book from the early 80s at Wal-Mart in the early 2000s. It recognized that it had Hulk in the title but the price was in the hundreds.
did you say?: Thanks, James May, for this wonderful video.
Can anyone help me? Years ago I saw a video on a new type of barcode, which essentially integrated the data INTO a design of lines. I think the computer analysed the thickness and length of lines or something. I remember the guy being excited because they gave it to designers and after a week they came back with things including what looked like intricate drawings of birds, and whole branches of leaves. Of course, the slightest gaps between lines are what is noted by the computer, but humans don't notice them at all.
Any clue at all? Impossible to find by googling without the name as far as I can tell!
You should do one on what the information on the side of tires mean since Jeremy and Richard didn't want to let you explain.
Captain slow on youtube, I'm in.
3:41 That sound is used in Terarria. Im not sure why I'm so good at that...
"Space baa baa space baa baa" Absolutely pissing my self :P
Ha ha ha.
very honestly, i watch this channel just because of James...
0:03 Actually, "Universal Product Code" (or UPC) is just a type of barcode. The one you showed in this video is UPC-A.
If i understood you well then its all about changing rotation speed of turbine, air changes speed and whistle usually when you change gear, and when your turbine is set up to get more out of it(thats why many cars having turbo dont make this sound) :P let me know if thats what you meant.
I want to know where he gets his shirts from, there amazing :D
Good Work, 47
ok, I think I understand. So there isn't really a pattern from going from 0 to 1 and so forth, rather each one was assigned a pattern prior without real regard to the translation(up or down) of the pattern, or is there a specific formula that you put the numbers into to get from number to bar-code?
Muy interesanté
damn a barcode is a nifty piece of tech ain't it :D
I would love if this channel did some stuff about cars I'm not speaking power tests but stuff like what you're asking or like why an American 8000cc V8 makes as much or little BHP as a 1600cc Euro or Japanese car even when you take turbos/superchargers out of the equation or how those fancy differentials you get in new FWD hot hatches work you know the details James is normally interrupted while explaining by snoring etc on Top Gear
You described EAN13 but there are a lot of barcodes standards and they may or may not contain a check digit.
In my country, Japan, we call a comb over "barcode bald" and it was featured by BBC Four in the series Hidden Japan. Perhaps how this hairstyle works would be a good topic to talk about.
2:13 onwards cracks me up :D
Am I missing something?
Each "element" of the bar-code is divided into 8 "modules", not 7.
Because each module is a bit, and the 8 of them form a byte, wich can be referenced in a ascii-table to work out what didgit it is.
the number 5 is "00110101" (bar-bar-space-space-bar-space-bar-space), and the number 1 is "00110001" (bar-bar-space-space-bar-bar-bar-space)
It really looks like they made a mess of this.
Not really. 8 'modules' would give you 2^8 = 256 characters to display, which is indeed used in the ascii table. But the ascii table includes amongst other things, the whole alphabet. A barcode is just digits. This means that 4 modules (or 2^4 = 16) would've been enough to form all 10 digits. I guess they chose 2^7 = 128 for extensibility.
when i was working at a shop in the past, one of the bottles didnt have all the barcode, it was mostly white, anyway i grabbed a black pen and filled in all the lines, and it worked
...and the man who bought that first pack of chewing gum was so happy, so proud of taking part in this historical event that he went to the museum every day for over a year and sat for hours next to the display and just.......stared at the gum.
finally something interesting
I thought a bar code was just a bunch on lines used to catch shoplifters. Didn't know it was so complicated!
Thanks - what about addressing QR codes which is the trend of today?
So fantastic, so enlightening...makes me wish George Boole could see this video! :-D
Top Gear!
it is just a 2 dimensional code with a tonne of validation which allows it to still be read even if it is a different shape (such as a heart or star) or if about 60% (don't quote me on the %) of it is mangled
it could also be called space code, we're discriminating!
Binary code. Literally.
2 things:
it's not designed by a computer, but by a human
and the beginning is always a country code (first 3 digits) where you say it's the product type
please correct me if I'm wrong, because I want James to be right, but I can see at the barcodenumber wich country it orginated
example: starting with 50 means it is produced in the UK
So i was born on the same day they first scanned a barcode,cool!
I didn´t really understand that optical illusion part. had it to do with the fact that 1 is not the binary one (00001)? could someone please explain this?
Interesting......
0:26 "absolutely lit" bruuuuuuuuuh
Emissions and other government regulations, cost cutting, keeping prices down, and laziness.
This is interesting. I work in a warehouse. I thought I had "barcode talk" cracked one time... turns out I was wrong.
You're not alone my friend. :)
james is just too good of a presenter.
By the way, a turbo charger video would be great, I love hearing mine 'blow off' and would love to why it does.
Good Video BUT there is an error at 3:44. It will be 107 modulo 10 which is 7 not 3.
That's not an error. The formula is 10 minus (number modulo 10) or 10 - (107 % 10) = 3
Mike Garner I know the formula is 10 - (n % 10); but there is no mention of that in the video
"The check digit is then the number required to make this total up to the nearest number divisible by 10." n % 10 gives you the digit in the ones place (7), but to make it total up to the nearest number divisible by 10 (110), you need 3 more.
The left side is 0011001
and the right side is 1100110. So it's just the opposite of what it was, space on the left, is bar on the right. Either side of the two bars in the middle.
Since '74 ! And the ATM just before that. We've had 40 yrs of Big Brother and hardly noticed ...
Make a video on how QR codes work!
As someone who, in fact, scans barcodes all day in a warehouse setting, I've always wondered this
James could you please explain torque please?
Someone could use H-Ternary to create a barcode system that ignores blemishes on the barcode, filter that out, and still be able to read the code itself
This is binary ASCII.
Look it up on wikipedia.
ASCII is the the type of coding that translates a binary code like this to text that you see on the screen.
I am confused, because when we were learning binary 1 would be 01 and could have an infinite number of leading 0s usually though they would be in groups of 8 or 4, resulting in 1 being either 00000001, or 0001. How is 1, 0011001? how does the system work exactly. Because it does not seem like exactly binary.
I'd like to know about other barcodes too, like QR codes.
Please a Episode on how Stealth Planes work???????????????
this guys in top gear
The number on the barcode at 1:42, when searched for on my windows phone turns up an arabic book store. Strange :D
So essentially James May's Q&A is just all the things James isn't allowed to explain on Top Gear.
Well done, although was hoping you'd include QR codes in that video
approval needed! approval needed. nobody speaks like that hahahaha
Yes, after the bar we go to space! :D
Lol, the EAN code at 1:44 is for Black Socks for Apple iPads.
shouldnt 5 be space space bar bar bar space bar? i mean, with 7 bits you get up to 127 which is the ascii limit,which makes sense and the one is 0011001 which is 49 which is one in ascii. you said 5 was 0111001 but 1 is 0011001...so it is either wrong or the order is arbitrary (or hard to figure)
Yay first thing scanned on my 18 Birthday
What does he mean when he says the numbers on the right are the optical opposite of those on the left, i thought each bar represented a number unique itself :S?
If it's OO I I OO I on the left,
then it's I I OO I I O on the right. Just invert it.
They only have 10 digits to represent, so they made it so that both left and right versions are unique but represent the same number.
How much is Agent 47 worth then?
How did you learn this? By a binary computer?
are you still working on your hangoverless beer ?
Mr James May,how do power inverters work?
That's my scent yo. Pure Sport.
Bar Bar Space Space, have you any code? Bleep bleep boop boop, bleep bleep bloop.
Didn't know Mercedes cars had barcodes.
lol
I have a Question. Is it really possible to tell if a person is lying to you just by physically analysing them?
I must say,James is rather comedic at times xD
That's because its not binary per say. While it does use 1s and 0s like binary, as in each location is either on or off, the whole system is completely different from binary and set patterns indicate a fixed value. That's how it works and why you're confused that its not real binary counting.
Did anyone else have to rewatch this to understand??
Hello
gonna make a remix of space space baba